German carmaker BMW is renowned for achieving perfection, or at least upping the standards in production quality. That is why it teamed up with three smaller companies to find a way of designing and testing vehicles to further cut out unwanted vibrations and totally eliminate metal fatigue, which can cause parts to break. The work is known as Eureka project Holo-Modal. BMW, along with Belgian noise and vibration engineering company LMS International, optics specialist Steinbichler and the Free University of Brüssels, have already developed a novel system of measuring the way body panels vibrate through a combination of traditional measurement and holographic techniques. According to the Holo-Modal partners, holographic analysis avoids physical contact with the test panel by illuminating the entire panel with a laser beam. By measuring the light reflected by the panel, it is possible to produce a high-resolution three-dimensional image of the entire surface as it vibrates. The development work on the holographic technique may already be complete, but, like all new technology, it will still take time for it to gain recognition within the industry. The Holo-Modal partners also had to design a software package combining traditional and holographic techniques. The group now hopes the new technique, along with the specially developed software, which operates on a PC, will allow carmakers to design body parts that are safer and more durable, and save on costs associated with vibration and noise control.


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    Title :

    New light on vibration analysis


    Contributors:

    Published in:

    Automotive Engineer ; 28 , 4 ; 42-45


    Publication date :

    2003


    Size :

    2 Seiten, 3 Bilder



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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